How is oil formed, and why is the earth's oil reserves increasing over the years?

In the subconscious of many people, oil is a non-renewable energy source. Based on the current oil consumption statistics, we will have no oil available in about 50 years?

In fact, most people have this idea because of the influence of the traditional concept of oil formation. There has always been a debate in the scientific community about how oil is formed. The most common theory is that in ancient times, some zooplankton on the earth The organic materials formed by the death of algae and algae have been buried deep in the seabed for tens of millions of years, and are transformed through high temperature and high pressure. This cause is also called the theory of biological oil formation . Dominance, and with it oil depletion.

But there is a statistic about oil reserves that completely discredits the so-called "oil depletion theory". According to the statistics of BP, by the end of 2004, the world's proven oil reserves reached 1,188.6 billion barrels , with a reserve-production ratio of 40.5 years. And the annual proven reserves are more than the production. In 1971, the world's proven oil reserves were only 612 billion barrels , and today, the proven reserves have not decreased but increased.

This set of data only refers to conventional oil, and there are huge reserves of unconventional crude oil resources on the earth, such as oil sands, combustible ice and other reserves. It is conceivable that in the future, the oil reserves of our earth will really Exhausted?

This also seems to overthrow the bio-oil theory, and some scientists maintain that the oil on earth originates from non-organic substances. In other words, it was formed by some natural force deep in the earth, or it was deposited on the crust of a meteorite. In 2009, scientists have proved that ethane and heavier hydrocarbons can be synthesized under the conditions of high temperature and pressure in the upper mantle. If the oil is indeed confirmed to come from the interior of the earth's crust, the oil will never be exhausted.

But so far, human beings have not been able to determine the real cause of oil. Although oil has greatly improved the productivity and production efficiency of modern society, its damage to the earth's environment is not small.

In the future, human beings should gradually abandon oil, an unenvironmental energy source, and vigorously use some green and clean energy sources, such as solar energy and wind energy.